<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
    </head>
    <body>
        <div>小 DEMO</div>
    </body>
    <script src="./center.js"></script>
    <script type="module">
        console.log("Hello World", location.href);
    </script>
</html>
